Improvement in stem-winding watches



E. BOURQUIN.

Stem-Winding Watch Patented "N0v. 30, v1869.

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'EDoU'ARD 'BoUR-oUIN, 'or NEW YORK, N. Y,

Letters Pate-nt N 97,346, dated November 30, 1869.

IMPROVEMENT IN STEM-WINDING- WATCHES.

The Schedule referred to in these Letten Patent and making part of the sama.

To all whom 'it may concern:

Be it known that-I, EDOU'ARD BoURQUlN, of the city, county, and State of New York, have invented a new and useful Improvement in Stem-Winding Watches; and I do hereby declare that the following is afull, clear, and exact description thereof, which will enable those skilled in the art to make and use the same, reference being had to the accompanying diawings, forming part of this specification.

Figure 1 represents a face view, partly in section, of my improved watch.

Figure 2 is a detail back view, on an enlarged scale, of the same.

Figure 3 is adetail face view of the spring for holding the hair-spring pin.

Figure 4 is a vertical section of the same, taken o the plano of a: x, fig. 3.

Figure 5 is a det-ail inverted-plan view of the spring for holdingthe setting-pinion. v

Figure 6 isa detail vertical section of the winding and setting-mechanism.'

Figure 7 is a vertical end view of the saine.

Figure 8 is a detail plan view of a modiiication of parts shown in fig. 2.

Similar letters of reference indicate corresponding This invention relates to various improvements in the setting, winding, and entire working-appaiatus of watches, and consists in the construction of the various devices pertaining thereto, with an object'of obtaining greater power with lessfriction Ithan could h eretofore be produced, and also to provide for greater facility of controlling the whole movement.

A, in the drawing, represents the frame of the watch.

B is the drum, containing the main-spring.

O is -the stem, which fits loose through a crownwheel, a, and with a squared portion through another toothed wheel, b.

The wheel b is held in a forked lever, D, which is pivoted to the main plate of the frame A, and which consists of two parts, one on each face' of said plate,

The two parts are connect-ed bya pin, c. A spring, d, fig. 5, throws the lever 1) outward, so

'as to hold the wheel b against (t.

Both the last-named wheels are provided with ratchet-teeth, and they are therefore coupled together 'by said spring d.

' When the spring d is allowed to hold b and a t0 gether, the latter will also be turned, and will, as it meshes into the winding-wheelf, which gears into the wheel fi ofthe drum, (as in iig. 2,) wind the spring.

7When, however, the knob c is pressed, it will throw the winding-device out of gear, and the pinion g willbecarried by the lever D into gear with a wheel,`h,

wheel f, will materially reduce the friction of the wind- Y ing-action.

The click is a bent spring, E,with a hook at one end, and placed upon the drn'm, so that itwill. embrace the wheel i, in fig. 2, and fits with its hook between two teeth of the same. to wind the main-spring, the hook will slip, but in the opposite direction it will securely hold said wheel, and prevent it from turning.

The hook of the spring E is held in place bythe wheel j; so that it cannot be thrown oii the wheel i, and a pin, l, on the drum, prevents the hook froni beingwithdrawn, by holding the other end of the spring E.

In case the watch is not provided'with a stem-winding attachment, the spring E can he used with the saule success, by using, in place of the wheel f, a

toothedsegment, F, as in iig. 8, which will hold the hook iu the proper position.

rllhe invention consists, first, in the employment of an eccentric arresting-attachment to the winding-apparatus.

Gis the arbor, to which the main-spring is fastened.

On it-'is mounted a disk, m., carrying a projecting lng, n.

'lhis lug, as it is revolved, its into recesses or notches of a curved plate, o', which is placed intov countersnnk portion of the drum, eccentric to the. axis- G, asin fig. 1.

\Vhenever the arbor G is revolved, the pin n carries the plate o' a portion further, until a thick part, o, of

it is brought so hear to the arbor that the disk m will bind against it, and thereby arrest further winding.

Heretofore, the small pin n had to bear all strain, and was very liable to he broken. By using the disk m'itself to arrest, and the pin n only formoving or set-ting the arresting-plate o, said device is not as lia-A ble to get out of order as heretofore.

The invention also consists in providing a spring- \Vhen 'the wheel i is turned lock ter the hair-spring studv p, so that said pin can be easily removed, whenever desired, from the plate H.

One arm, b, has an eyel at the end, which fits upon the pivot t, on which the hair-spring regulator J turns.

It rests on said regulator, and retains it in place.

'lhe other arm, u, of J, catches into a note-h of the stud p, to which pin the outer end of lthe hair-spring is secured. y

The pin p is thus securely held, and can still be readily removed, if desired. HeretoforeLit was held by :t very tine screw, which was dicult to make and put in, and apt to be lost.

Having thus described my invention,

What I claim as new, :md desire to secure by Inet# ters Patent, is-

1. The disk m on the arbor G, and the pin n, on said disk, in combination with the notched curved plate o', which carries the thickerportion o, ind moves eccentric to the arbor, substantially as herein shown and described, so that the winding-action will be arrested by the edge ofthe disk m, substantially as herein shown and described.

2. The V-shaped spring I, arranged to look the escapement-regulator, and also the hair-spring stud 1J, substantially :is herein shown and described.

EDOUARD BOURQUIN.

Witnesses GEO. W. MABEE, ALFRED LURCOTT. 

